CURLOPT_FRESH_CONNECT - Man Page

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FRESH_CONNECT, long fresh);

Pass a long. Set to 1 to make the next transfer use a new (fresh) connection by force instead of trying to reuse an existing one. This option should be used with caution and only if you understand what it does as it may impact performance negatively.

Related functionality is CURLOPT_FORBID_REUSE(3) which makes sure the connection is closed after use so that it cannot be reused.

Set fresh to 0 to have libcurl attempt reusing an existing connection (default behavior).

0

This functionality affects all supported protocols

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 1L);
    /* this transfer must use a new connection, not reuse an existing */
    curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

Added in curl 7.7

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

CURLOPT_FORBID_REUSE(3), CURLOPT_MAXAGE_CONN(3), CURLOPT_MAXLIFETIME_CONN(3)

curl_easy_setopt(3), CURLOPT_FORBID_REUSE(3), CURLOPT_MAXAGE_CONN(3), CURLOPT_MAXLIFETIME_CONN(3), CURLOPT_PIPEWAIT(3), CURLOPT_URL(3), libcurl-symbols(3), libcurl-tutorial(3).